Portable sound system



FIG. 1 is a front perspective view of a portable sound system, showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a side elevational view thereof; and,

FIG. 8 is an opposite side elevational view thereof.

The broken line portions of FIGS. 1-4, 6, and 8 are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a portable sound system, as shown and described. 